body{
    width: 1600px;
    margin:0 auto;
}
.activeNode,.rules,.svgCotain{
    width: 300px;
    float: left;
    height: 800px;
    border:1px solid chartreuse;
}
.blackborad{
    position: relative;
}
.svgCotain{
    width:980px;
}
rules ul li{
    line-height: 40px;
}
.rules .child div{
    height:40px;
    line-height:40px;
    
}
.activeNode .nodes{
    width: 60px;
    float: left;
    margin-right:10px;
    height:60px;
    line-height:60px;
    border:1px solid black;
    text-overflow:ellipsis;
    white-space:nowrap;
    overflow:hidden;
    cursor: default;
}